As motors step, inertia makes the rotor oscillate about its new position (the motor’s settling time).  This natural back and forth movement might sometimes contribute to the erratic movement of motors.  Adding a Lin damper to the step motor’s shaft translates into smaller oscillations and thus, smoother motion.  This reduced step response time can ultimately result in much improved motor performance.

Below is a comparison of one motor’s settling time with and without the use of a damper.